jedit is not from the Ubuntu repositories and as such we can provide no support for it. To fix your apt, do "dpkg --remove --force-remove- reinstreq jedit" .
** Changed in: Ubuntu Status: Unconfirmed => Rejected -- Internal error opening cache https://launchpad.net/bugs/56413 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs